My old Nano (1st Generation) got an unhappy iPod picture and crapped out on me a few months ago. Now, while I don't NEED a new iPod, I'd certainly like one. Especially for the car... However, I've heard a few negative reviews about it... About how the accelerometer is too sensitive, the battery life is too short, etc... I want a 16 GB so I can store a few movies on it and still have loads of space. My question is, is the new Nano worth it?